Commit 6192b54b authored Jul 28, 2005 by David S. Miller

[NET]: Fix busy waiting in dev_close().



If the current task has signal_pending(), the loop we have
to wait for the __LINK_STATE_RX_SCHED bit to clear becomes
a pure busy-loop.

Fixed by using msleep() instead of the hand-crafted version.

Noticed by Andrew Morton.

Signed-off-by: David S. Miller <davem@davemloft.net>

parent 2ac6608c

net/core/dev.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -901,8 +901,7 @@ int dev_close(struct net_device *dev)
		smp_mb__after_clear_bit(); /* Commit netif_running(). */
		while (test_bit(__LINK_STATE_RX_SCHED, &dev->state)) {
		/* No hurry. */
		current->state = TASK_INTERRUPTIBLE;
		schedule_timeout(1);
		msleep(1);
		}

		/*